diff options
| author | Leah Neukirchen <leah@vuxu.org> | 2020-12-04 12:38:16 +0100 |
|---|---|---|
| committer | Leah Neukirchen <leah@vuxu.org> | 2020-12-04 12:38:16 +0100 |
| commit | d20125b66e35d3380e4e39c4a75fbb6604b6cc00 (patch) | |
| tree | a47dbfe6cf429db38b30f9a11a6b610058ceaa77 | |
| parent | a804cd7bdf6cf1557cca4656eeca678925059358 (diff) | |
| download | adventofcode2020-d20125b66e35d3380e4e39c4a75fbb6604b6cc00.tar.gz adventofcode2020-d20125b66e35d3380e4e39c4a75fbb6604b6cc00.tar.xz adventofcode2020-d20125b66e35d3380e4e39c4a75fbb6604b6cc00.zip | |
day03
| -rw-r--r-- | day03 | 323 | ||||
| -rw-r--r-- | day03.clj | 15 | ||||
| -rw-r--r-- | day03.ijs | 5 |
3 files changed, 343 insertions, 0 deletions
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@@ -0,0 +1,15 @@ +(def data + (->> (slurp "day03") + (clojure.string/split-lines)) + +(defn slop [step] + (->> (range) + (map #(mapv (partial * %) step)) + (take-while #(< (first %) (count data))) + (map (fn [[x y]] + (nth (cycle (nth data x)) y))) + (filter #{\#}) + (count))) + +(slop [1 3]) ; => 270 +(apply * (map slop [[1 1] [1 3] [1 5] [1 7] [2 1]])) ; => 2122848000 diff --git a/day03.ijs b/day03.ijs new file mode 100644 index 0000000..b1c51f4 --- /dev/null +++ b/day03.ijs @@ -0,0 +1,5 @@ +d =: (3000&$;._2) 1!:1 < 'day03' +slop =: 3 : '+/''#''= d{~ y <@:*"_ 0 i.>.(#d)%{.y' + +slop 1 3 NB. 270 +*/ slop&> (1 1; 1 3; 1 5; 1 7; 2 1) NB. 2122848000 |